201917860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113437}}^1$

素因数の和:113535

約数の個数: 24

約数和(自身を含む): 428795640

約数和(自身を除く): 226877780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 113437, 226874, 453748, 567185, 1134370, 2268740, 10095893, 20191786, 40383572, 50479465, 100958930, 201917860]

約数ペア:

[(1, 201917860), (2, 100958930), (4, 50479465), (5, 40383572), (10, 20191786), (20, 10095893), (89, 2268740), (178, 1134370), (356, 567185), (445, 453748), (890, 226874), (1780, 113437)]